Varun S26-1 Review: Fat Tyre E-Bike Tested 2026

If you want a go-anywhere electric bike with chunky tyres and a comfortable ride, the Varun S26-1 is hard to ignore. It sits at £949 in the Biktron shop, with an RRP of £1,149. This review explains what that money gets you in everyday UK use.

We have not ridden this bike on a test track. Instead, we base this review on Varun's published specifications, UK e-bike rules and our judgement of how those specs work on real British roads. Real range is always lower than the quoted figure, especially on hills or in cold weather.

1. First look: what is the Varun S26-1?

A fat tyre bike for mixed surfaces

The Varun S26-1 is a 26-inch fat tyre electric bike with a 250W rear hub motor. That motor meets the UK's EAPC limit, so you can ride it on public roads without a licence or insurance. Varun calls it a mountain bike, but most owners in Britain will use it as a rugged commuter or weekend explorer.

It is part of the full Varun range, a brand Biktron stocks across several entry-level and mid-range models. The S26-1 sits towards the top of the value fat tyre line, but it is not a high-end e-MTB. That matters when you compare it with bikes costing twice as much.

Specs that matter at a glance

The bike uses a 26 x 4.0 inch tyre set, mechanical disc brakes and a front suspension fork. Varun quotes a maximum assisted range of around 37 to 47 miles, depending on assist mode, terrain and rider weight. The battery is a removable 48V unit, which makes charging indoors far easier than a fixed pack.

It has a 7-speed Shimano derailleur and a basic LCD display showing speed, battery level and assist mode. There is no full-speed throttle, because UK law does not allow one on an EAPC. That is a sign Varun designed this model for the legal British market rather than the off-road-only crowd.

2. Design and build quality

Frame and finishing

Varun builds the S26-1 around a step-over aluminium frame. The welds are tidy, but this is a budget fat bike, not a hand-built trail machine. For £949, you get a solid frame that can handle light off-road work and potholed streets. The paint and cable routing are basic but neat.

The bike weighs around 30kg, which is normal for fat tyre e-bikes. That is heavy if you live in a flat without a lift. You will notice the weight when lifting it onto a train or carrying it up stairs. If you need a lighter option, compare it with the Varun S700-1 City Electric Bike, which is slimmer, faster on tarmac and cheaper at £699.

Components you will actually use

You get a 7-speed Shimano derailleur, which is enough for gentle hills and city riding. The mechanical disc brakes need a firm pull, but they are simple to adjust at home with basic tools. Mudguards are not included as standard, so you may want to add them for winter commuting and wet roads.

The display is basic: speed, battery level and assist mode. It is mounted on the left handlebar and is easy to read in daylight. The saddle is padded but not luxurious. A gel cover costs about £20 and makes long rides much kinder on sit bones.

The wide handlebar gives a stable, upright riding position. It is good for seeing over traffic and feels relaxed on long rides. But the upright posture does increase wind resistance, which uses a little more battery at speed. That is a fair trade for comfort.

3. Motor and battery: real-world expectations

250W motor on UK roads

The rear hub motor is rated at 250W continuous, which is the legal maximum for an EAPC in the UK. It gives smooth assistance up to 15.5 mph, then cuts out. On flat tarmac you will cruise at that speed easily. On steep hills the motor helps, but you still need to pedal sensibly.

Fat tyres add rolling resistance, so the S26-1 feels slower off the mark than a city e-bike with thinner tyres. That is normal, not a fault. The 48V battery gives decent torque for a hub motor at this price. Varun quotes the range at up to 47 miles on the lowest assist mode.

In real UK conditions, expect less. Cold weather, headwinds and hills can cut the range to about 25 to 30 miles on mixed assist. That is still enough for a 10-mile commute each way with a charge at work if needed. See the official government guidance on e-bike rules for the exact motor and speed limits.

Charging and battery removal

The battery locks into the downtube and can be removed with a key. That is a big plus for UK riders who park in a shed, garage or communal bike store. You can charge it indoors at room temperature, which helps the cells last longer and makes theft less of a worry overnight.

A full charge takes around 5 to 6 hours. Avoid leaving the battery fully discharged for weeks, because that shortens its life. If you ride daily, charging after each use is fine. For occasional riders, keep it at around 60 per cent for storage and top up before a big ride.

4. Riding comfort: fat tyres, suspension and fit

Why fat tyres feel forgiving

The 4-inch wide tyres are the main comfort feature. They soak up broken tarmac, gravel, grass and tree roots without needing a full-suspension frame. You can run them at lower pressure, around 15 to 20 psi, to improve grip and cushioning. That makes the S26-1 a relaxing ride on canal paths or forest tracks.

The front suspension fork adds about 80mm of travel. It is a basic coil fork, not an air fork, so heavy riders may find it dives under hard braking. Still, for commuting and light trails it takes the sting out of potholes. If you ride mostly on smooth roads, consider a City Bike instead, which will feel noticeably quicker.

Sizing and riding position

Varun lists the S26-1 as suitable for riders from about 5ft 4in to 6ft 2in. The saddle height is adjustable, but the frame is a single size. Shorter riders should check the standover height before buying, because fat bikes can feel tall at a standstill. A test sit in a shop or careful measurement avoids a poor fit.

The handlebar is wide and flat, giving a stable, upright position. That is good for visibility in traffic and reduces strain on your lower back. It is less aerodynamic, so you will use more battery at higher speeds. The saddle is basic but adequate; most riders add a gel cover after the first long trip.

5. UK legal status: is it road legal?

EAPC rules in plain English

Yes, the Varun S26-1 is road legal in the UK as an electrically assisted pedal cycle. It has a 250W motor and assistance cuts out at 15.5 mph. You must be 14 or older to ride one, and you do not need a licence, tax, MOT or insurance.

You must pedal for the motor to help. The bike has no throttle that works above walking pace, which keeps it inside the rules. For a full explanation, check the Cycling UK EAPC page. It is written for everyday riders, not lawyers.

The Wikipedia summary of UK e-bike law also covers the 250W limit and the 15.5 mph assisted cut-off. These sources agree with the manufacturer's design choices on the S26-1.

Where you can and cannot ride

Legally, you can ride the S26-1 on roads, cycle lanes and bridleways, just like a normal bike. You cannot ride it on motorways or most public footpaths, unless there is a shared-use sign. Some private land and trail centres have their own e-bike rules, so check before you load it in the car.

Because the tyres are wide, you are allowed on many gravel and forest roads where skinny tyres struggle. The motor still cuts out at 15.5 mph, so downhill you are on your own. Wear a helmet and use working lights after dark, as you would on any bike in the UK.

6. Who should buy the Varun S26-1?

Best use cases

The S26-1 suits a specific kind of rider. It is not a pure road bike, and it is not a full-suspension mountain bike. If your rides mix tarmac, canal towpaths and the odd grassy hill, it hits a sweet spot between stability, comfort and price.

• Commuters with a bumpy or unpaved section on their route.
• Leisure riders who want a stable, comfortable bike for weekend exploring.
• Heavier riders who need stronger wheels and wider tyres for support.
• Riders on a budget who still want a legal fat tyre e-bike with a removable battery.

If you mainly ride smooth city streets, the wide tyres and 30kg weight will feel like hard work. A lighter city e-bike such as the Varun C20-1 Electric City Bike would be quicker, easier to carry and costs £599. That may suit a pure tarmac commute better.

Who should look elsewhere

Trail riders who want to hit jumps and technical singletrack need a proper e-MTB with mid-drive torque and better suspension. The S26-1 can handle gravel and grass, but it is not built for aggressive off-road use. The mechanical brakes are adequate, not outstanding on steep descents.

If you need to carry the bike upstairs or fit it in a small car boot, a folding model makes more sense. The Folding Bikes category has lighter options that still offer electric assistance. But if you have storage space, the S26-1 is a better value fat tyre choice.

7. Varun S26-1 vs the rest of the Varun range

How it compares on price and purpose

Within the Varun line, the S26-1 is the most expensive fat tyre model Biktron sells. That extra money buys a bigger 48V battery, compared with the 36V packs on the cheaper Varun M26-2. It also has a slightly longer quoted range and a cleaner display layout.

If you want the same fat tyre comfort for less, the VARUN M26-2 PLUS costs £809 and offers similar suspension and tyre size. The S26-1 wins on range and display quality, but the price gap is real. You are paying roughly £140 more for the bigger battery and a more polished cockpit.

Which Varun should you actually choose?

Choose the S26-1 if you ride longer distances and want the strongest battery in the range. Choose the M26-2 PLUS if you mostly ride under 15 miles per trip and want to save £140. The Varun M26-2 PRO is another option at £799, but its battery is smaller again, so real range drops.

All of these models share the same 250W motor and 15.5 mph assisted limit, so UK legality is identical. The main difference is battery capacity and finishing. We would not pay more for the S26-1 just for the name; the range and 48V system are the real reasons to choose it.

8. Ownership: battery care, servicing and accessories

Simple maintenance you can do at home

Keep the tyres pumped to around 20 psi for mixed riding, and check the brake pads monthly. The chain needs oil every few weeks, especially after wet rides in British weather. Because the bike is heavy, learn how to remove the front wheel before you get a puncture on a canal path.

Most local bike shops can service the mechanical parts, even if they do not sell electric bikes. The battery and motor are sealed units, so there is little to maintain. If a fault appears, Biktron's support team can guide you on warranty claims. Keep your proof of purchase safe, because e-bike warranty claims usually need it.

Accessories worth adding

Mudguards are the first upgrade for British winters. Fat tyres throw a lot of spray, so full-length guards keep your work clothes clean. A rear rack is also useful, but check the frame bosses before you buy one. Good lights and a strong lock are not optional on an e-bike.

• Front and rear rechargeable LED lights.
• A sold secure D-lock, because e-bikes are a target for thieves.
• Puncture-resistant inner tubes or tyre sealant, because fat tubes are harder to find.
• A comfortable saddle or gel cover for rides over 40 minutes.

Expect to spend around £80 to £120 on the essentials. That is normal for any e-bike, not a criticism of the S26-1 specifically. Good security is the best value upgrade you can make, because replacing a stolen e-bike costs far more than a quality lock.

9. Final verdict: is it worth £949?

What you get for the money

At £949, the Varun S26-1 undercuts many branded fat tyre e-bikes from big-name manufacturers. You get a legal 250W motor, a removable 48V battery, wide comfortable tyres and a simple, durable frame. That is a fair price for the specification, not a bargain basement deal.

The S26-1 is not a performance machine. The brakes, fork and gears are entry-level, and the weight limits its appeal for flat-dwellers. But if you want a reliable, comfortable e-bike for mixed surfaces, it does the job without costing £1,500 or more.

Our honest score

We give the Varun S26-1 a score of 4.2 out of 5 for value at this price. That reflects strong comfort and UK legality, offset by weight and basic components. It is a solid choice for the right rider, not a five-star wonder bike.

For more detail on how we judge, read all Biktron guides. If you are still unsure, compare the S26-1 with the Varun M27-1, which has a different frame style at £659 but a smaller battery. Your choice should come down to range, comfort and where you actually ride.